html,
body {
  overflow: hidden;

  width: 100%;
  height: 1000%;
  margin: 0;
  padding: 0;
}

body {
  background-color: #ddd;
}

.drawer {
  float: right;

  margin-right: 20px;
}

.drawer-item {
  position: relative;

  width: 270px;
  height: 80px;
  margin: 15px 0;

  cursor: pointer;
}

.drawer-item__inside {
  position: absolute;
  top: 0;
  right: 0;

  overflow: hidden;

  width: 270px;
  height: 100%;

  transition: right 500ms;

  border-radius: 10px;
}

.drawer-item:hover .drawer-item__inside {
  right: 130px;
}

.drawer-item__inside--left {
  font-size: 16px;
  line-height: 30px;

  position: absolute;
  top: 0;
  left: 0;

  width: 30px;
  height: 100%;

  transform: rotate(180deg);
  text-align: center;

  color: #eee;
  background-color: rgba(0,0,0,.5);

  writing-mode: tb;
}

.drawer-item__inside--center {
  font-size: 47px;

  position: absolute;
  top: 0;
  left: 30px;

  display: flex;
  align-items: center;
  justify-content: center;

  width: 60px;
  height: 100%;

  color: #fdefec;
}

.drawer-item__inside--right {
  font-size: 12px;
  line-height: 16px;

  position: absolute;
  top: 0;
  left: 90px;

  box-sizing: border-box;
  width: 140px;
  height: 100%;
  padding: 15px 5px 15px 20px;

  color: #fff;
}

.drawer-item__outside {
  position: absolute;
  top: 0;
  right: 0;

  width: 180px;
  height: 100%;

  border-top-right-radius: 10px;
  border-bottom-right-radius: 10px;
  background-image: radial-gradient(circle at left,transparent 20px, #f5f5f5 0);
  background-repeat: no-repeat;
}

.drawer-item__outside--content {
  font-size: 20px;

  position: absolute;
  top: 0;
  right: 0;

  display: flex;
  align-items: center;
  justify-content: center;

  width: 160px;
  height: 100%;

  transition: opacity 500ms;

  opacity: 0;
}

.drawer-item:hover  .drawer-item__outside--content {
  opacity: 1;
}
